LOWER UNIT - 6A-2790-817643R1 DECEMBER 1996
3. Tighten propeller nut to 55 lb.ft. (75 N·m). Bend
tabs against nut.
a
b
b
a - Propeller Nut - Torque To 55 lb. ft. (75 N·n)
b - Bend Tabs Against Nut
!
CAUTION
Do not misinterpret propeller shaft movement for pro-
peller movement, propeller and propeller shaft howev-
er may move fore-and-aft. However, the propeller itself
should not move fore-and-aft on the propeller shaft.
4. Re-check propeller nut for tightness after first use.
Check for tightness periodically, especially if a stain-
less propeller is used.
5. Install and adjust trim tab as follows.
Trim Tab Adjustment and
Replacement
IMPORTANT: The trim tab is made of a special alloy to
aid in protecting the drive shaft housing and gear
housing from galvanic corrosion (corrosion and pit-
ting of metal surfaces). Do not paint or place protective
coating on the trim tab, or trim tab corrosion protec-
tion function will be lost.
1. Replace trim tab if 50% (or more) consumed. Mark lo-
cation of old trim tab on anti-ventilation plate before re-
moval; install new trim tab in same location.
2. The trim tab will offset (balance) some of the “steering
load” that is caused by “propeller torque” at higher
speeds. If at higher speeds the boat turns more easily
to the left, loosen bolt, move the trim tab (trailing edge)
to the left (when viewed from behind); re-tighten bolt.
Turn trim tab (trailing edge) to the right if the boat turns
more easily to the right.
50553
a
b
c
a - Trim Tab
b - Anti-Ventilation Plate
c - Retaining Bolt and Washer; Torque Bolt to 22 lbs. ft. (29.8 N·m)
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